Mold-making machine.



H. R. ATWATER.

MOLD MAKING MACHINE.

APPLIGATION FILED MAY 19. 1910.

Patented Aug. 12, 1913.

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H. R. ATWATBR.

MOLD MAKING MACHINE.

APPLIOATION FILED MAY Patented Aug. 12,1913

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HARRY R. vAlwA'lER, OF CLEVELAND, OHIO, ASSIGNOR T0 THE OSBORN MANUFAO- TUBING COMPANY, 0F CLEVELAND, OHIO, A CORPORATION 0F OHO.

MOLD-MAKING MACHINE.

Specification of Letters Patent.l

Application led May 19, 1910. Serial No. 562,165.

To all lw/wm t may concern Be it known that I, HARRY R. ATWATER, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State lof Ohio, have invented a. new and use ful Improvement in 'Mold-Making Machines,

of which the following is a specification, the

principle of the ainvention being herein eX- plained and the best mode in which l have contemplated applying that principle, so as to distinguish it from other inventions.

My present invention, relating as indicated to mold making machines has more particular regard to rock-over machines of so as to be adapted to be swung over in reverse position onto the parting stand. The latter is vertically reciprocable' so that when the holder proper is thus reversed, such holder being then sustained by the filling stand in horizontal position,'the mold may be drawn away from said holder and `the pattern plate-secured thereto. The patented structure just referred to is further characterized by having the parting stand so-.con-

'structed as to be. adapted to support the mold in unchanged position, while it is being freed from the pattern. Such means in the specific form there illustrated comprised plurality of .laterally spaced depressi'ble members that project upwardly from the parting stand andmeans for locking said members indwhatever position they are forced to assume after the mold has been rocked over into position for parting. Such mold will thus be sustained, when it islowered from thcpattern, in exactly the position assumed by it when iiist turned over.'

The present invention has as its more especial object then, the provision of improved means tor locking' such depressible members.I whereby all may bel locked simultaneously and by a single operation. y

4'lothe accomplishment oi these andrelated objects, the invention consists of the means hcreinatterfully described and particularly pointed out in the claims.

rfhe annexed-drawings and the following description set forthin detail certain mechanism embodying the invention, .men uisclosed means constituting, however, but one of varlous mechanical forms in which the. principle of the invention muy be used.,

n said annexed drawin" Figure l is a side elevation of a mold ni ing machine bodying my several improvements; Fig. 2 is a top plan View of the parting stand ot such machine; FigA 3 is similarly a bottom plan view of the e with certa-in acct parts; Fig. t s a v.'fertical sectional taken on the line 4 4, Figs@ and 3; and y Fig. 5 is a sectional detail.

The frame of the machine consists in the case in. hand of the usual mold llii and partingr stands iii, A. for

i movement is mounted on low rollers. Such filling stand, wl signed to receive the mold pei'ldin,5 the filling and tainping ot' the nd therein, consists simply.' of a plunger c wth a rest or head of on its upper said plunger being; adjustably secured in the frame of the ina-- chine, but when in use being' retained at a predetermined eleva tion. The parting stand A', on the other hand, comprises a plunger, or rather two plungers, c adapted to be ven. tically reciproca ted by means ot' a roclr-shaft a3 that bears cai-us c* cngaging with vthe lower end of the plungers. The latter are providedwith a plattorm-like head C lwhich supports the hield bottom b in the linal stage of the machincs operation, although such mold does not directly contact with said platform, as will presently be explained., intermediate between the. two stands just described, are two laterally spaced standards A2 thatare integral or rigid With the trame of the machine., and serve to oscillatorily support the pattern plate holder'B.

The details ot` construction of such standards and holder need not here be noted, as they forni no part ot the present invention, and are, moreover, 1fully described and claimed in my issued Patent No. 937,036,

dated Oct. l), 1.909.

The general operation of the machine will' lt lwhen positioned over the parting stand t iat adiustinentot the top ot the latter to the. under side otthe mold is necessary, and

to this cud, a series ot tour vertically reciprocable 1)ins or iluno'ers n are A)rovided in i l o illustrated, in the iirst otithe above named patents, heine` held in suitable pockets e2 in which are proyided compression springs c. one beneath each plunger to normally retain the saine in elevated position until the iveigrht ot the roelfed over mold depresses or tierces it down. lee Fia'. lior details). lzilordcr, however, to loel; the pins in this (.'Ieprcssial positioin l provide, instead ot the individual cams of the prior structure, two similarly curved, oppositely disposed loeltin bars C oi2 the general torni clearly shown in fl'l`igr. 3. Each such bar, in .other words, resembles a flattened U, its outer ends c* haringa sullicient spread to respectively enter apertures ci in the sides ot the pockets `that receive the corresponding pair ot reciprocalile plungers c. Such ends are, moreover, concare to conform with the eross-sec tion ot the pins and be capable of having corresponding increased trictional contact therewith. The central portions of the lockingbal's extend inwardly substantially to the center of the platform ot the parting stand. vlotatalily mounted7 however, intermediately between such inner portions of the bars is a rotatable cam member C2 having a pair ot oppositely disposed similar cam taees c, which, upon rotation of such member, respectively engage said locking bars to torce the saine outwardly and thus cause their extremities to 'press against.- the pins. Said cam member is also provided with a flange f upon which the inner portions ot the bars may loosely rest, no other support beingrequired in addition to this and that altoi'de'd by apertures integral with the cam is a short shatt (-8:

which extends upwardly through a suitable aperture c in the platform C to receive an operating lever 010, the outer end ot' which, forming a handle, lies clear ot' the platform in convenient reach of the operator. Such shaft, or in other Words7 the cam member is not fitted tightly in the bearing formed by aperture c but is allowed a certain amount ot' lateral. heating o1' play, the object of which is topermitof an equalization of the outward pressure exerted upon the locking bars. Flach bar` ot course, is by its eonstruetion adapted to distribute the pressure it receives equally between the two pins wherewith it engages. There is also a cert-ain amount ot spring" in said bars, so that when the cam is rotated into locking position, it Will remain there and at the same time proper pressure be applied to the pins7 or plungers, to securely hold them under the venience, but also in the matter ot` security,

to have such pins secured simultaneously and trom a common operating handle; vtor with the previous arrangement of separate cams i`or locking the individual pins there is always danger that one may be released or slip and thus endanger the mold.

Other modes of applyingl the principleot my invention may be employed instead of the one explained, change being made as regards the mechanism herein'cliselosed., i rovidefl the means stated by any of the fol' owing claims or the equivalent ol. such stated 'means be employed.

l therefore particularly point out and, distinctly claim as my invention v l. l'n a mold-making machine, a plurality of independently adjustable members each adapted to Contact with the mold at one of a series of laterally spaced points, preparatory to freeing said mold from a pattern embedded in the material with which the'i'lasli of the mold is rammed; and simultaneously operative means adapted to retain said adjustable members in such contacting position, said means including members frictionally engaging against `said adjustable members.

2. Tn a mold-making machine, a plurality ot iiidependent-ly adjustable members "each adapted to contact with the mold at one of.

a` series ot' laterally spaced points, prepa-ratory to freeing; said mold trom a pattern embedded in the material with which the flask otI the mold is rammed: audsimultaneously operative members adaptedtrictionally to 1 -engae'e said 'adjustable members transversely ol their path of adjustment.

3. In ay mold-making machine, flaterallyl isa , members retain tlie lutter in -fro-i i depression furto mold being placed in position prenomtor.7 to freeing; the same from a pattern embedded in the material with which the flask of the mold is rammed: looking` members moiable '.iunsf'fersi-,ly of seid d e'iressible CDD'- tzictiug position; and 'means adapted to simultuneously actuales-oid 'locking members.

In a mold-making machine, the combi- .netion i stand; laterally spaced dismessi ble members m: ited therein and :irren jed to Contactl with the mold-bottoni mold being placed in position I epsretory to freeing the same from pattern embedded in the materiel -with which tlie of the mold is rammed; means noting to retain depressible members their upper lfind normal positions; Locking` members movable transversely of scid depressible members to engeA the .ist

f said mold opted to simuliinne bottom; und .uit-za ously,v :istruito le.

6. 'In s' nicldinuking nist-.blue tbe combination oi a stond; laterally spaced depressiw ble members mounted therein and arranged to Contact 'Willi tbe moid-`fot upon e mold being; plof-o? in position peretorv to freeing the es from e potter-n i.. bedded in the moterisi with which the fissi; of the mold is rammed; springs orrzifged under said :lepreesible members und rij iig to retain the loller in their upper and nor` nal poition; l" *ing members movable transversely of said depressiole members to engage and retain the letter from depression further than by said moldbottom; end ,menus adapted to simultaneously actuele said locking' members.

7 In a, moldfmaking machine, tbe combination of a, stand; laterally spaced depressi ble membe 's mounted therein and arranged to Contact with the' mold-bottom upon mold being placed in posit-ion preperotorf.7 to freeing: the, same from apaittern embedded in the mi n out 'which um eine of the mold is rammed; locking members inovable transversely oi said depressibl'e members to press against the latter :ind thus retain the same in suoli contacting position; 51nd means for simultaneously actuating said looking members, said means beingy adapted (pequolize the pressure exerted by the several loking members.

8. Ima. mold-making machine, the combination of a, stand; e plurality of pairs of depressible members mounted in said stond and arranged to Contact With tlie mold-bottom upon ai mold being placid in position preparatory to freeing the seme from a pstternl embedded in the material with which the lios-k of the mold is rammed; two simila'rly curved locking bars arranged with their central portions directed inwardly and with their outer ends adjacent to corre- 'pressible toni upon e mold nein upon `tom upon e mold being in pohtion preparatory@ lreemg the from e petble members;

spending irs und ineens located between tl e central poro'f said ours i ed to simultue force the ser ends ln zum` i notion oil et d; deoressilile members mminied in stand and, arranged to Contact wi the mold-botg pl eed in position preparatory to freeing' the sume from s patmachine, tlie eombiI- tern embed-led in tlie materiel with which the fissi; of the mold rummedg erro similately curved locking bars arranged with Ll i central portions directed int/verdi and with their outer ends scent to correspondM ing pairs of seid depressible members; and com member ii'iovasly mounted between the central portions olf bars :1i-deptecll, upon morenoents to simultaneously oroe the same out? ufl d' thus cerise their ends to bers` On a mold-making machine, the oombinzition oit a. stond.; s plurality pairs oi depressible members mou d in se arranged to conta et i tern embedded in tbe material with Wliieii tile desir the mold is re.; -oiedg two similarly curved locking bars erranged with their central portions directed ine" -rdly and with. their outer ends adjacent 'to corresponding pairs of said depressible members; sn` o @ein member rotatably mount/ed between tne central portions of seid 'oars adept ed, upon rotetioin to simultaneously' force the seine outwardly and tlius cause their ends to bear against seid depressible meid bers. i

' ll, in a moldmelringmecliine, the senr bins-tion el a stand; a plurslity of pairs of depressiole members mounts-din seid stond and arranged to Contact with the mold-bottorn upon ii4 mold being pleced'in position prepnrstory to freeing tbe .sem from s pat-- tern embedded in the with umich the tleslr of the moldlis rammed; two similn ly e` ed locking 'bers arranged Witli their control portions directed inwardly ond with their outer ends adjacent to corresponding pairs or". said depressible members; and e com member rotatably mounted between the central portions of said bars and adepted, upon rotzitiom to simultaneously force tlio same outwardly and thus cause their ends to beer against said depressible members, said com member having suliicientlatu plurality of soirs of eral play to permit the pressure exerted by said bars tobe equalized.

feet/ej pressil'ile menilae 's mounted in Snel] pockets; springs arranged under seid lepressble n'ielnbers and acting lo rela-in the letter in their upper and norma/l posit-ione; two similarly curved loel .1g bers arranged with their central portions directed inwardly end with their outer ends adjacent to the Corresponding paix-.s el seid rlepressble members,

The walls ol the poelels'for Said members beineA iilperl-mfecl to receive :unl sustain Snell ends; :unl n emu menilier rolnably n'loijlnleel between ille eenli'nl porlionfs ol Seid bm'sl and adapted, upon rotation, to simultaneously fol-ee the seme outwardly and thus @euse their ends to bear egalns' sind depl'essible members, seul cem member belng 'formed with a flange adapted to form e rest `for tile Cenlrel portions of Saud bers.

Signed by me tlns 17th dey of Mey 1910.

ANNA L. GILL, JN0. F. Omnium. 

